21565180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{41}}^1$

素因数の和:104

約数の個数: 144

約数和(自身を含む): 60653376

約数和(自身を除く): 39088196

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 17, 20, 26, 28, 34, 35, 41, 52, 65, 68, 70, 82, 85, 91, 119, 130, 140, 164, 170, 182, 205, 221, 238, 260, 287, 289, 340, 364, 410, 442, 455, 476, 533, 574, 578, 595, 697, 820, 884, 910, 1066, 1105, 1148, 1156, 1190, 1394, 1435, 1445, 1547, 1820, 2023, 2132, 2210, 2380, 2665, 2788, 2870, 2890, 3094, 3485, 3731, 3757, 4046, 4420, 4879, 5330, 5740, 5780, 6188, 6970, 7462, 7514, 7735, 8092, 9061, 9758, 10115, 10660, 11849, 13940, 14924, 15028, 15470, 18122, 18655, 18785, 19516, 20230, 23698, 24395, 26299, 30940, 36244, 37310, 37570, 40460, 45305, 47396, 48790, 52598, 59245, 63427, 74620, 75140, 82943, 90610, 97580, 105196, 118490, 126854, 131495, 154037, 165886, 181220, 236980, 253708, 262990, 308074, 317135, 331772, 414715, 525980, 616148, 634270, 770185, 829430, 1078259, 1268540, 1540370, 1658860, 2156518, 3080740, 4313036, 5391295, 10782590, 21565180]

約数ペア:

[(1, 21565180), (2, 10782590), (4, 5391295), (5, 4313036), (7, 3080740), (10, 2156518), (13, 1658860), (14, 1540370), (17, 1268540), (20, 1078259), (26, 829430), (28, 770185), (34, 634270), (35, 616148), (41, 525980), (52, 414715), (65, 331772), (68, 317135), (70, 308074), (82, 262990), (85, 253708), (91, 236980), (119, 181220), (130, 165886), (140, 154037), (164, 131495), (170, 126854), (182, 118490), (205, 105196), (221, 97580), (238, 90610), (260, 82943), (287, 75140), (289, 74620), (340, 63427), (364, 59245), (410, 52598), (442, 48790), (455, 47396), (476, 45305), (533, 40460), (574, 37570), (578, 37310), (595, 36244), (697, 30940), (820, 26299), (884, 24395), (910, 23698), (1066, 20230), (1105, 19516), (1148, 18785), (1156, 18655), (1190, 18122), (1394, 15470), (1435, 15028), (1445, 14924), (1547, 13940), (1820, 11849), (2023, 10660), (2132, 10115), (2210, 9758), (2380, 9061), (2665, 8092), (2788, 7735), (2870, 7514), (2890, 7462), (3094, 6970), (3485, 6188), (3731, 5780), (3757, 5740), (4046, 5330), (4420, 4879)]